They have different prices, so if the result is pretty much the same in terms of trust in the client’s eyes, it’d be good to have the option of choosing a cheaper one when starting out with a limited budget.

Split testing the seals would be a good idea to see what impact it has on conversions. Maybe just using a seal created by you, as long as it looks pretty solid and official, will improve the conversion.

I found another trust site, although not exactly like the ones mentioned above. It’s not for every business, but seems great for those that can benefit from it.